WireGaugeCalc Free calculator · NEC cited · works offline
Conduit Bending Calculator
Conduit bending calculator is fast with WireGaugeCalc, since you enter the rise and the bend angle and the tool gives you the mark spacing.
It applies the right multiplier for the angle, so the distance between bends matches the offset you need.
You get the shrink and the take-up figures too, which keeps the finished run on layout the first time.
Open the calculatorEnter any two values and read the rest.
Ohm’s law: V = I × R and P = V × I. Field aid only, verify against the current NEC and your local authority having jurisdiction.
Offset and Saddle Bend Marks
An offset uses two equal bends, so the calculator multiplies the rise by the angle multiplier to set the distance between marks.
Since each bend shortens the straight length, the tool reports the shrink so your end point lands where you planned.
For a three-bend saddle it spaces the center and outer marks, so the conduit clears the obstacle cleanly.
What the Bend Calculator Gives You
Enter the bend details and the tool returns:
- Distance between marks for offsets
- Multiplier for 10, 22, 30, 45, and 60 degree bends
- Shrink amount per bend
- Center and outer marks for a saddle
- Stub length adjusted for bender take-up
- Marks measured from the conduit end
One app for every NEC calculation
WireGaugeCalc keeps the calculations you reach for most in one place:
- Voltage drop and wire sizing for any run
- Conduit fill for EMT, PVC, and RMC
- Box fill and junction box sizing
- Ampacity and temperature derating
- Motor circuit and load calculations
- Conduit bend offsets and saddles
Built for the field, works offline
The whole app runs on your phone, so it keeps working in a basement, an attic, or a job site with no signal.
There is no account to create and nothing to load. Open it, run the number, and get back to work.
- No signup and no signal needed
- Answers in a tap, not a spreadsheet
- Same tool on phone, tablet, and desktop
Every result cites the NEC article
Each answer shows the table or formula it came from, so you can check the method and learn the code as you go.
That makes the app useful on the job and during exam prep, since the reasoning is right next to the number.
Switch the code year your job runs on
Jurisdictions adopt the NEC at different times, so you can match the calculation to the code in force:
- NEC 2017, 2020, and 2023 tables
- Copper and aluminum conductors
- 60, 75, and 90 degree C terminations
- Single-phase and three-phase systems
Run the number, then get back to work
Stop flipping through a paper book or hopping between calculator sites. Enter your values, read the code-cited answer, and move on. Free to use, no signup.
Open the calculatorFrequently asked questions
What multiplier does a 30-degree offset use?
A 30-degree offset uses a multiplier of 2, so the distance between marks is twice the rise. The calculator applies the correct multiplier once you pick the angle.
How does take-up affect a 90-degree stub?
Take-up is the distance the bend consumes, so you subtract it from the stub height to find the mark. The tool subtracts the take-up for your bender size automatically.
Why does my conduit come up short?
Each bend adds shrink, which pulls the end point back toward the bender. The calculator reports shrink so you can add it to the overall length before cutting.
Is WireGaugeCalc free to use?
Yes. Every calculator is free to run with no signup. A paid tier adds saved projects, PDF reports, and extra code years, but the core math stays free.
Does it work without internet?
Yes. The app runs on your device, so it keeps working with no signal on a job site, in a basement, or in an attic.
Are the results code accurate?
Results follow published NEC tables and standard formulas, and each answer shows the article it came from. It is a field aid, not a stamp of approval, so verify against the current code and your local authority before you wire anything.
Which NEC code year does it use?
You can switch between NEC 2017, 2020, and 2023, since jurisdictions adopt the code at different times. Pick the year your job runs on.